# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from __future__ import absolute_import, division, print_function

import binascii
import os

from cryptography.hazmat.primitives.ciphers import algorithms, modes

from .utils import generate_encrypt_test
from ...utils import load_nist_vectors_from_file


class TestBlowfish(object):
    test_ECB = generate_encrypt_test(
        lambda path: load_nist_vectors_from_file(path, "ENCRYPT"),
        os.path.join("ciphers", "Blowfish"),
        ["bf-ecb.txt"],
        lambda key: algorithms.Blowfish(binascii.unhexlify(key)),
        lambda key: modes.ECB(),
        only_if=lambda backend: backend.ciphers.supported(
            algorithms.Blowfish("\x00" * 56), modes.ECB()
        ),
        skip_message="Does not support Blowfish ECB",
    )

    test_CBC = generate_encrypt_test(
        lambda path: load_nist_vectors_from_file(path, "ENCRYPT"),
        os.path.join("ciphers", "Blowfish"),
        ["bf-cbc.txt"],
        lambda key, iv: algorithms.Blowfish(binascii.unhexlify(key)),
        lambda key, iv: modes.CBC(binascii.unhexlify(iv)),
        only_if=lambda backend: backend.ciphers.supported(
            algorithms.Blowfish("\x00" * 56), modes.CBC("\x00" * 8)
        ),
        skip_message="Does not support Blowfish CBC",
    )

    test_OFB = generate_encrypt_test(
        lambda path: load_nist_vectors_from_file(path, "ENCRYPT"),
        os.path.join("ciphers", "Blowfish"),
        ["bf-ofb.txt"],
        lambda key, iv: algorithms.Blowfish(binascii.unhexlify(key)),
        lambda key, iv: modes.OFB(binascii.unhexlify(iv)),
        only_if=lambda backend: backend.ciphers.supported(
            algorithms.Blowfish("\x00" * 56), modes.OFB("\x00" * 8)
        ),
        skip_message="Does not support Blowfish OFB",
    )

    test_CFB = generate_encrypt_test(
        lambda path: load_nist_vectors_from_file(path, "ENCRYPT"),
        os.path.join("ciphers", "Blowfish"),
        ["bf-cfb.txt"],
        lambda key, iv: algorithms.Blowfish(binascii.unhexlify(key)),
        lambda key, iv: modes.CFB(binascii.unhexlify(iv)),
        only_if=lambda backend: backend.ciphers.supported(
            algorithms.Blowfish("\x00" * 56), modes.CFB("\x00" * 8)
        ),
        skip_message="Does not support Blowfish CFB",
    )